Fixing TypeScript type errors in a legacy Angular application during production deployment
I'm collaborating on a project where During development on a legacy Angular application that uses TypeScript 2.6, I’ve come across several type errors that have crept into our production branch. The application has a mix of strict and non-strict typing, making it tough to get a clean build. I've tried running `ng build --prod` to catch any build-time issues, but it still throws type errors related to some third-party libraries and misconfigured interfaces. For instance, I have this interface: ```typescript interface User { id: number; name: string; email?: string; } ``` And when I fetch users from an API, I'm trying to map them to this interface: ```typescript fetchUsers(): Observable<User[]> { return this.http.get<User[]>('https://api.example.com/users'); } ``` However, I keep receiving the TypeScript error: ``` Type 'APIUser' is not assignable to type 'User'. Property 'name' is missing in type 'APIUser'. ``` I suspect that the API response has some discrepancies. Refactoring the interface to include a `name` property resolved that issue, yet there are still other instance types that conflict. I've also tried using type assertions like `as User`, but that feels like a band-aid rather than a real fix. Additionally, I noticed that some components use `any` for props, leading to more type-related warnings. Should we adopt a more strict typing approach across the board? I've considered running `tslint` to enforce rules and clean up the existing code, but I'm unsure whether to tackle each component individually or refactor them into a cohesive typing strategy. Also, our CI/CD pipeline fails if there are any warnings during builds, and I want to ensure we maintain proper type safety while also achieving a successful production deployment. Any advice on how to systematically address these TypeScript type errors without breaking existing functionality would be greatly appreciated! My team is using Typescript for this mobile app. Thanks for taking the time to read this!